Operating instructions for Cable Detector, article 37270766
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17
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5.1.4 Detecting line breaks with two transmitters
When locating a line break with one transmitter supplied from one lead end, breaks cannot be precisely located
due to field interference in unfavourable conditions. These limitations can be ameliorated by connecting two
transmitters, one at each end. In this case each transmitter is set to a different lead code, e.g. Transmitter 1 to
Code F and Transmitter 2 to Code C. (A second transmitter with a different lead code is not included in the scope of
delivery, and must be ordered separately.)
Requirements:
The circuit must not be live.
All unused leads must be connected to ground as shown in Fig. 3-1-4.
Connect and use both transmitters per Fig. 3-1-4.
Proceed as in the example application.
If the transmitters are connected per Fig. 3-1-4, receiver C will show the line break on the left. If the receiver is
moved to the right over the break, it will show F. If you are directly on the break, due to the overlapping of both
transmitter signals no line code will be shown.
1.
Adjust the transmitter power to suit the different
search radii.
2.
The position you are searching for can be detected
precisely by switching the receiver to manual mode
and setting the right sensitivity.